Engine.



No. 628,398. Patented July 4, .1899.

G. DE CAMP & E. B. ROTH.

'ENGINE.

(Application filed Oct. 19,1893. 4 sheets-sneet I.

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%4 GEORGE DE CAMP f No. 628,398. Patented July 4, I899.

G. DE CAMP & E. B BOTH.

v ENGINE. (Applicatioi filed Oct. 19, 1398.

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' 6. DE CAMP & E. B. ROTH.

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(Application med Oct. 19, 1898.

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NITED STATES PATENT FFICE.

GEORGE DE CAMP AND EDIVARD B. ROTH, OF ST. LOUIS, MISSOURI.

ENGINE.

SPECIFICATION forming part of Letters Patent No. 628,398, dated July 4, 1899. Application filed ctober19, 1898. Serial No. 693,957. No model.)

To all whom it may concern:

Be it known that we, GEORGE DE CAMP and EDWARD B. ROTH, citizens of the United States, residing at St. Louis, in the State of Missouri, have invented a certain new and useful Engine, of which the following is such a full, clear, and exact description as will enalole any one skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, forming part of this specification.

Our invention relates to that class of engines in which there are two cylinders working at right angles to each other to impart a uniform rotary motion to the crank-shaft.

One object of our invention is to so construct an engine of the type mentioned that it can be reversed.

Another objectof our invention is to so construct the engine that it will have no deadcenters, and hence can be started from any position.

Another object of our invention is to construct the engine so that it will exhaust more perfectly, and hence economize the use of steam.

Our invention consists in supplying the engine with stationary valve-stems having suitable inlet and outlet ports communicating with the cylinders.

Ourinvention also consists in providing the ports between the stationary valve-stems and the cylinders with suitable controlling-valves automatically operated by the movement of the engine.

Our invention also consists in various other novel features and details of construction, all of which are described in the following specification and pointed out in the claims affixed thereto.

In the accompanying drawings, which illustrate one form of engine made in accordance with our invention, Figure 1 is a vertical central section on the line 1 1 of Fig. 5. Fig. 2 is a vertical section on the line 2 2 of Figs. 1 and 5. Fig. 3 is a view of detail. Fig. 4 is a section on the line 4 4 of Fig. 2. Fig. 5 isa horizontal section on the line 5 5 of Figs. 1 and 7. Fig. 6 is a front elevation of the cylinders; and Fig. 7 is a section similar to Fig. 1, but showing the casing only.

Like marks of reference refer to similar parts in the several views of the drawings.

10 is a suitable casing, which is preferably secured to a base 11 and is provided with a removable front plate 12, Figs. 2 and 5. Projecting through opposite sides of the casing 10 are stationary pistons 13 and 14, upon which slide cylinders 15 and 16. At right angles to the cylinders 15 and 16 and preferably formed integral therewith is a cylinder 17, in which works a piston 18. Passing through the piston 18 is a wrist-pin 19, which is secured to a disk 20 upon the mainshaft 21 of the engine. Closing the top of the cylinder 17 is a slide-valve 23, which works on a valvestem 24. Closing the lower end of the cylinder 17 is a slide-valve 25, working on a valvestem 26, similar to the valve-stem 24. In the valve-stem 24 are formed passages 27 and 28, and in the stem 26 are formed similar passages 29 and 30. The passages 27 and 28 are separated by a solid part 28 and the passages 29 and 30 by a similar part- 30. The passages 27 and 28 are provided with ports 31 and 32, which communicate with the upper end of the cylinder 17 through a port 33,'and the passages 29 and 30 are provided with ports 34 and 35, which communicate with the lower end of said cylinder through a port 36. Formed on the cylinder 17 are valve-cases 37 and 38, in which In the valve-case 37 work valves 39 and 40. is a port 41, which communicates by way of the openings 32 with the passage 28 of the valve-stem 24, and a passage 42, which communicates by way of longitudinal passages 43 and the openings 31 with the passage 27 in the opposite end of said valve-stem. In the Valve 39 are ports 44 and 45, by means of which the passages 41 and 42 are alternately connected with a passage 46, leading to the cylinder 16. In the valve-case 38 is a passage 47, communicating through the ports 34 with the passage 29 of the valve-stem 26, and a passage 48, which communicates by way of longitudinal passages 49, similar to the passages 43 above mentioned, and the ports with the passage 30 in the opposite end of said valve-stem 26. In the valve are formed ports 40 and 40", which alternately connect the passages 47 and 48 with a passage 40 leading to the cylinder 15. Loosely mounted on the wrist-pin 19 is a collar 50, Figs. 2 and 6, provided with arms 53, one of which is pivoted to the operating-lever 51 of the valve 39 and the other end of which is pivoted to the operating-lever 52 of the valve 40, so that the motion of the wrist-pin 19 will automatically operate the valves 39 and 40.

Formed in the casing 10 is a passage 54, which communicates at one end by means of a port 55 and a chamber 56 with the passage 27 of the valve-stem 24 and at the other end by means of a port 57 and achamber 58 with the passage 30 of the valve-stem 26. The chambers 56 and 58 are formed by means of cap-pieces 59 and 60, which are bolted to the casing 10. In the casing 10 are also formed a passage 61, which communicates by way of a port 62 and a chamber 63 with the passage 28 of the valve-stem 24, and a passage 64, which communicates by way of a port 65 and chamber 66 with the passage 29 of the valve-stem26. The chambers 63 and 66 are formed by means of cap-pieces 67 and 68, similar to the cap-pieces59 and 60, and are also bolted to the casing 10. The passage 54 communicates by means of a port 70 with a valve 71, and the passages 61 and 64 also communicate with the said valve by means of ports 72 and 7 3, respectively. Steam enters the steam chambers 74 of the valve 71 through the inletpipe 75, Fig. 4, and is exhausted from the said valve through a passage 76 and an exhaustpipe 77.

78 is a handle by means of which the valve 71 is operated.

The ports 72 and 7 3 are connected by means of an annular passage 79 in the valve 71.

The operation of our device is as follows: Supposing the parts to be in the position shown in Fig. 1, if the handle 78 be moved to the rear to connect the steam-chamber 74 with the passage 7 O and the passages 72 and 73 with the exhaust-chamber 76 steam will then be admitted through the passage 54 to the passage 27 of the valve-stem 24 and the passage 30 of the valve-stem 26, while the passages 28 and 29 at the opposite ends of said valve-stems will be connected through the passages 61 and 64, respectively, with the ports 72 and 73, and thence with the exhaustchamber 76. It will be seen from this that steam will be admitted through the ports 42, 45, and 46 to the cylinder 16. This will drive the cylinder toward the left. As soon as the cylinder begins to move toward the left the port 33 will communicate with the port 31 in the valve-stem 24 and admit steam to the upper end of the cylinder 17. This will drive the piston 18 downward and assist in revolving the wrist-pin 19. As soon as a quarter of a revolution has been made and the cylinders are in the extreme position on the left the valves 39 and 40 will be turned in such a position that the passages 46 and 40 will both be closed. A slight further movement will move the said valves 39 and 40 in such a position as to allow steam to enter the cylinder 15 through the passages 48 and 49 and ports 40 and 40. At the same time steam will be exhausted from the cylinder 16 through the ports 46 and the passages 41 and 44. As soon as a half-revolution has been completed and the piston 18 is in its lowest position the position of the valves 39 and 40 will be reversed, valve 39 being in the position of valve 40 in the drawings, and vice versa. Steam will enter the lower end of the cylinder 17 through the port 36. At the same time the steam in upper end will be exhausted through the port 33 into the passage 28 of the valve-stem 24. WVhen a revolution has been completed, the valves 39 and 40 will be again reversed, so as to supply steam to the cylinder 16 and to exhaust it from the cylinder 15. If the handle 78 of the valve 71 is moved in the opposite direction, so as to supply steam to the passages 61 and 64 and exhaust through passage 54, the direction in which the engine runs will be reversed.

It will be seen from the above that our ongine can be readily reversed without any of the mechanism which is necessary in an ordinary engine. It is also evident that our engine contains no dead-centers, as at least one cylinder is always in an operative position.

Having fully described our invention, what we claim as new, and desire to secure by Letters Patent of the United States, is

1. In an engine, a cylinder, a piston in said cylinder and connected to the wrist-pin of the engine, a second cylinder at right angles to said first cylinder, a slide-valve carried by said first-named cylinder and provided with ports communicating with both said cylinders, and an automatically-operated Valve in the passage between said slide-valve and said second cylinder.

2. In an engine, two single-acting cylinders, a double-acting cylinder at right angles with said first-named cylinders, two valve-stems provided with ports, and valves sliding on said valve-stems and provided with ports communicating with said cylinders.

3. In an engine, two single-acting cylinders, a double-acting cylinder at right angles to said single-acting cylinders, two valve-stems provided with suitable ports, two valves sliding on said valve-stem and each provided with ports communicating with said double-acting cylinder and one of said single-acting cylinders.

4. In an engine, two single-acting cylinders, a double-acting cylinder at right angles thereto, suitable valve-stems provided with ports, valves carried by said double-actin g cylinder and sliding on said valve-stem, and ports in each of said valves communicating with said double-acting cylinder and one of said singleacting cylinders.

5. In an engine, two single-acting cylinders, a do uble-actin g cylinder at right angles there to, suitable sliding valves for admitting steam to said cylinders, suitable valves in the passages leading from said slide-valves to said single-acting cylinders, and means for operating said latter-named valves by the movement of the engine.

6. In an engine, two single-acting cylinders, a double-acting cylinder at right angles thereto, valve-stems provided with ports, valves sliding on said valve-stems and communicating with said cylinders, and means for supplying steam to one end of each of said valvestems and exhausting it from the other.

7. In an engine, two single-acting cylinders, a double-actin g cylinder at right angles thereto, valve-stems provided with ports, valves sliding on said valve-stems and communicating with said cylinders, means for supplying steam to one end of-each of said valve-stems and exhausting it from the other, and means for reversing the supply of steam to said valve-stems.

S. In an engine, two single-acting cylinders, a double-acting cylinder at right angles thereto, valve-stems provided with ports, valves sliding on said stems and communicating with said cylinders, means for supplying steam to one end of each of said valve-stems and exhausting it from the other, valves in the passages from said first-named valves to said cylinder, and means for operating said valves.

9. In an engine, two single-acting cylinders, a double-actin g cylinder at right angles thereto, valve-stems provided with ports, valves sliding on said stems and communicating with said cylinders, means for supplying steam to one end of each of said valve-stems and exhausting it from the other, valves in the passages from said first-named valves to said single-acting cylinder, means for operating said valves, and means for reversing the supply-of steam to said valve-stems.

10. In an engine, two single-acting cylinders, a double-acting cylinder at right angles thereto, two slide-valves each cornmunicating with said double-acting cylinders and one of said single-acting cylinders, valves in the passages between said slide-valves and said single-acting cylinders, and operating con nections between said second valves and the wrist-pin of the engine.

In testimony whereof we have hereunto set our hands and sealsin the presence of the two subscribing witnesses.

GEORGE DE CAMP. EDWARD B. ROTH. 

